US1014673A

US1014673A - Type-writing machine.

Info

Publication number: US1014673A
Application number: US52068409A
Authority: US
Inventors: Herbert H Steele
Original assignee: MONARCH TYPEWRITER CO
Current assignee: MONARCH TYPEWRITER CO
Priority date: 1909-10-02
Filing date: 1909-10-02
Publication date: 1912-01-16
Anticipated expiration: 1929-01-16

Description

H. H. STEELE.

TYPE WRITING MACHINE.

APPLICATION FILED OCT. 2, 1909.

Patented Jan. 16, 1912.

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H. H. STEELE.

TYPE WRITING MACHINE.

APPLICATION FILED 0011.2, 1909.

4 SHEETS-SHEET 2.

1,014,673, v Patented Jan. 16, 1912.

WITNESSES. |NVENTEIR= COLUMBIA PMNOGRAPM cn.,WAsHINOTON, D-,C-

H. H STEELE.

TYPE WRITING MACHINE.

APPLICATION I'ILED 00w. 2, 1909.

Patented Jan. 16, 1912.

m INVENTEIR:

H H STEELE TYPE WRITING MACHINE.

APPLICATION FILED OUT 2, 1909. 1,014,673, Patented Jan. 16, 1912.

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P-IIE ATTEIRNEY m E m sT TEs PATENT OFFICE.

HERBERT H.

STEELE, OF MARCELLUS, NEW YORK, AS SIGNOR TO THE MONARCH TYPE- WRITER COMPANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Application filed October 2. 1909. Serial No. 520,684.

Specification of Letters Patent.

Patented Jan. 16,1912.

To all whom it may concern:

Be it known that I, HERBERT H. STEELE, citizen of the United States, and resident of Marcellus, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in Type- WritingMachines, of which the following is a specification.

My invention relates to typewriting machines and more particularly to billing mechanisms.

In some billing mechanisms heretofore devised both friction and positively engaging clutches have been employed to connect certain of the stops with the platen in order to arrest the rotation thereof both forwardly and backwardly. A purely friction clutch has its advantages and disadvantages. It is advantageous in' that the movable billing stop may be connected with the platen properly at any point in the rotation of the platen (whether or no a fractional spacer employed to overcome the objections to the friction billing clutch but the ordinary positive clutch is without the advantage of the friction clutch in adaptability to be instantly and properly engaged so as to connect the movable stop with the platen without relative displacement between the billing stop and the platen and thus preserve the proper relationship between the work on the platen and the cooperating billing stops.

The disadvantage of an ordinary positive clutch is somewhat increased when the platen is provided at its opposite end with a fractional line spacer, by the use of which the platen is adapted to be turned variable distances while the line spacing ratchet wheel remains at rest. In the use of such a fractional spacer it will be understood that relation intended to v the movable stop and v the platen or the work thereon. A positive "clutch of the ordinary character may be while the latter is in its fractionally spaced position. A positive clutch of the kind referred to may consist of a toothed wheel corresponding in number of teeth and spaces to the line spacing wheel and of a single detent or tooth adapted to be clutched with and unclutched from said toothed wheel. An example of this form of clutch may be seen in the patent to Felbel No. 902,572 granted Nov. 3, 1908.

One of the main objects of my invention is to provide a construction of clutch of the positive type for use in connection with the billing stops which shall not only possess all of the advantages of a friction clutch but also all of the advantages of a positive clutch with the additional. advantage that it may be used in connection with a platen provided with a fractional spacer or with one not provided with such a mechanism.

nect the movable billing stop with the platen v Other objects are to further improve the detail construction of billing mechanism disclosed in said Felbel patent.

To the above and other ends my invention consists in the features of construction, -arrangements of parts and combinations of devices to be hereinafter described and particularly pointed out in the appended claims.

In the accompanying drawings wherein like reference characters indicate corre sponding parts in the various views, Figure 1 1s a s1de elevation on an enlarged scale showing the upper portion of a typewriting machine embodying my invention, portions of certain devices being sectioned away on the line ww of Fig. 2. Fig. 2 is a front elevation partly in section of a carriage embodying my improvements, the right-hand finger wheel being broken away in this view. Fig. 2 is an end view showing the platen clutch. Fig. 3 is an'enlarged detail central sectional view, the section being. taken on the line w-m of Fig. 1. Fig. 4 is an end view partly in section showing parts of the clutch mechanism for the biller, the View showing the parts as they would appear with the cover plate removed and as seen from the right-hand end. Fig. 5 is a transverse sectionalview' of the same taken on a line g y of Fig. 3 and looking in the direction of the arrow at said line. Fig. 6 is a fragmentary detail front view with parts in section showing the controlling handle or lever for the clutch and the latch or look oooperative with said lever. Fig. 7 is a detail trolling wedge or cone and a portion of the lever by which it is shifted. Fig. 8 is a de tail top view showing two of the cooperating billing stops and an associated spring friction device. Fig. 9 is a fragmentary sectional view, showing some of the parts illustrated in Fig. 3, the section on which the parts in Fig. 9 are taken corresponding substantially to that shown in Fig. 3 but showing a different disposition of the parts. Fig. 10 is an enlarged detail fragmentary sectional view showing the driven wheel of the billing device and the means for supporting it and the bracket plate and for adjusting the driven wheel, the section being taken on the line z-z of Fig. 1 and looking in the direction of the arrow at said line.

The invention is in the nature of an improvement upon the, construction disclosed in the Felbel patent hereinbefore referred to, the present invention being directed more particularly to improving the clutch mechanism by which the stop mechanism may be rendered operative or inoperative to arrest the platen.

While I have shown my invention embodied in a Monarch machine and employed in connection with billing devices of the character shown in the patent to Felbel hereinbefore referred to, it should be understood that the invention may be embodied in other styles of typewriting machines, and from certain aspects of my invention, the clutch devices may be employed in connection with billing devices of a different character from those shown in said patent.

The top plate 1 of the machine supports standards 2 to which oppositely grooved guide rails 3 are secured. The rear cross and guide bar 4 of the carriage is provided with oppositely grooved guide rails 5, which with the fixed guide rails 3 form ways to receive anti-friction balls or rollers 6 which support and guide the carriage in its movements from side to side. of the machine over. the top plate.- Extending forwardly from the rear cross bar 4 of the carriage are

end bars

7 and 8. These end bars 7 and 8 are apertured to enable the platen shaft 9 to extend therethrough and to provide for the reception of journal bearings 10 for the platen shaft. A cylindrical rotative platen 11 is fixed by a set screw 12 to the platen shaft. The line spacing wheel 13 is formed with crown ratchet teeth 14 with which a line spacing pawl 15 cooperates. The pawl 15 is pivoted at 16 to a pivoted arm 17. An arm 18 is secured to a rock shaft 19 and co acts with a line spacing pawl to move it intoengagement with the teeth of the line spacing wheel and to move the pawl carrying arm 17 and thus rotate the platen. The

forward end of the shaft 19 is provided withv clearly appear.

-a finger piece 20 by which the rock shaft 19 and line spacing pawl are actuated. The

usual spring-pressed detent roller 13 bears on the teeth of the line spacing wheel. Upwardly extending lugs 21 and 22 are formed on the end plates of the carriage and are connected by a cross bar or rod 23.

Finger wheels

24 and 25 are connected to the ends of the platen shaft to rotate the platen. The line spacing wheel 13 is'adapted to be connected with the platen by a clutch such as that now regularly employed in the Monarch machine. This clutch enables the platen to turn independently of the line spacing ,wheel as will hereinafter more It should be understood, however, that so far as my invention is concerned it is immaterial what character of platen clutch is employed and from certain aspects of my invention it is immaterial whether or not a platen clutch is employed. My invention however has special utility when employed in connection with a machine in which a platen clutch is used. The parts thus far described are like those embodied in the Monarch machine and further detailed description thereof is deemed unnecessary.

The right-hand end of the platen shaft 9 is extended farther than usual beyond the end plate 21 of the carriage and forms a bearing for a shouldered sleeve 26 (see Fig. 3). This sleeve is received in and fixed to a sheet metal bracket plate 27 secured to the frame of the machine by a screw 28.

From an inspection of Fig. 10 it will be seen that the bracket plate 27 is adjustably supported at its rear end on the carriage by an angle bracket 29 (see Fig. 10), a screw passing through an enlarged opening in the bracket plate 27 and taking at its threaded end into a tapped opening in the angle bracket 29. A second screw passes through an enlarged opening in the angle bracket 29 and takes into a tapped opening in the rear of the end bar 7. A shouldered headed screw 30 has an enlarged portion 31 which constitutes a bearing for a driven band or sprocket wheel 32, the shoulder on the screw 30 hearing against the bracket plate 27. The screw has a reduced threaded end which passes through an enlarged opening 27 in the plate 27 to afford an adjustment of the screw and the wheel 32 carried thereby lengthwise of the plate 27 to take up any undue slack in the sprocket chain which passes around the wheel 32. A nut 30 which is in the nature of an eccentric co-acts with the threaded end of the screw back of the plate 27 and the edge of the eccentric is adapted to bear against a pin 30 riveted to the plate 27 in order to resist any tendency of the sprocket chain to displace the screw 30 from its adjusted position. It will be seen therefore that the bracket plate 27 is rigidly secured in place on the right-hand end plate of the carriage and constitutes a support for various portions of thebilling devices, as will appear more clearly from the following description.

From an inspect-ion of Fig. 3 it will be seen that the sleeve 26 constitutes a bearing on which a hub 33 of a shell or housing 34 is adapted to turn freely. A driving, sprocket, or band wheel 35 surrounds the hub 33 of the housing and is rigidly fixed thereto by any suitable means as by a drive fit. The housing 34 is closed at one end by a wall 36 which connects the housing with its supporting hub 33. The opposite end of the housing is closed by a cover plate 37 detachably secured in place by screws 37 An internal circumferential shoulder 38 is formed within the housing to constitute a seat for a ring 39 provided with internal teeth 40 having oppositely inclined faces see Figs. 4 and 5). The toothed ring 39 is rigidly secured to the shell or housing 34 by pins 41. A member 42 is contained within the housing and surrounds the platen shaft 9 and is secured thereto by a pin 43, the housing 34 abutting one end of the member 42. The member 42 has a portion 44 thereon which is of a diameter that corresponds substantially to the space within the circular series of inwardly projecting teeth 40, the member 44 receiving a slight bearing. contact on the crowns of the teeth in order to afiord an additional support for the housing or shell. The member 43 has a central recess or depression 45 in which the inner ends of three radially movable pawls or

dogs

46, 47 and 48 project. These dogs are received and move radially in radial slots or ways 49 formed in the member 42 (see Fig. 4). The member 42 is slotted at 50 (see Figs. 3, 4 and 5) opposite each sliding pawl to enable a pin 51 carried by the associated pawl to project through to the opposite side of the part 44 as illustrated in Fig. 3. The relation of the slots 50 and the pins 51 is such that when the dogs or pawls are fully withdrawn from engagement with the cotiperating teeth 40 the pins 51 will be seated against the bottom walls 52 of the slots 50 to limit the inward radial movements of the pawls as clearly shown in Fig. 9. From an inspection of Fig. 5 it will be seen that three coiled contractile springs 53 are each connected at opposite ends to two of the pins 51 so. that said springs 53 exert an inward pressure on the radially movable I dogs or pawls to withdraw them from engagement with the teeth 40. The teeth 54 on the

pawls

46, 47 and 48 have oppositely inclined engaging faces which correspond to the spaces between the teeth 40 with which the dogs coiiperate. There are fifty-nine teeth shown in the present instance on the ring 39 and the relation between the locking or engaging

pawls

46, 47, 48 and the teeth 40 is such that when the parts are in looking position two of the locking dogs will at all times engage upon opposite sides of the engaged teeth 40 to prevent a relative movement between the

members

39 and 44, as shown clearly in Figs. 4 and 5. The construction is likewise such that each pawl or looking dog may engage on either one side or another of any tooth 40 of the member 39, the side of a tooth 40 which is engaged and the depth of engagement depending on the relative rotative positions of the two members. The pawls are forced into locking engagement with the teeth 40 by a controlling member 55 which is in the nature of a loosely supported cone, circular cam or wedge provided with an enlarged central opening 56, the cone loosely surrounding the platen shaft 9, as clearly shown in Figs. 3, 4 and 9. The inner conical end portion of the member 55 is'arranged centrally of and is adapted to bear against the inner ends of the engaging dogs or pawls as shown in Fig. 4, in order to cam or wedge the pawls into engagement with the teeth 40 and to lock and maintain them in such engagement.

From an inspection of Fig. 3 it will be seen that a sleeve 57 surrounds the platen shaft and is itself surrounded by a coiled expansion spring 58 which bears at one end against the bottom wall of a cup or housing 59 apertured. centrally to receive the platen shaft and bearing at its outer end against the hub 60 of the right-hand finger wheel 24. The inner end of the spring 58 bears against a circular flange 61 formed on the sleeve 57. The inner end 62 of the sleeve bears against the outer face or end of the cone, wedge or cam 55 so as to force the inner ends of the radially movable dogs. The member 55 is in the nature of a floating cam which is free to move longitudinally'and laterally of the axis of the platen to accommodate itself to the positions of the

pawls

46, 47 and 48 when they have been arrested by the teeth 40 in their engaging movements, the member 55 at this time often being eccentrically disposed as shown in Fig. 4.

It will be observed that the construction is such that the greater pressure of the spring 58 will overcome the pressure of the springs 53 and will normally force the

pawls

46, 47 and 48 into engagement with their cotiperative teeth 40 to lock the

members

39 and 44 to rotate together irrespective of the relative rotative position of adjustment between the

members

39 and 44. Itwill also be observed that the construction is such that a greater or less extent of engagement between one or another of the pawls and the teeth 40 is eflected, depending on the relative position of rotative ad- 1105 cam to the left into engagement with the v justment between the

members

39 and 40,

but that in all cases two of the pawls will engage on opposite sldes of their engaged teeth 40 in order to prevent a relative rotation between the two members and to posiwhich the member may be moved against its spring pressure to release the locking pawls from engagement with the teeth 40. Thus the bracket plate 27 is provided with an arm 63 (see Figs. 1 and 3) which'extends downwardly and to the right there from and then upwardly toform a bearing arm for a release lever 64. This lever is provided with a finger piece 64 at its forward end and at its rear end is apertured to receive a headed shouldered screw 65 which passes freely through the opening in the lever and engages a tapped opening in the bracket arm 63 and receives a lock nut 66 at its lower threaded end. The release lever has an aperture 67 intermediate its ends (see Figs. 1, 3 and 7) through which the platen shaft 9 extends, the lever embracing the shaft and the sleeve 57. Rounded engaging projections 68 are formed on one side of the lever for cooperation with the flange 61 so that a swinging movement of the release lever to the right is effective to move the sleeve 57 longitudinally to the right against the pressure of its spring 58. This releases the pressure of the spring 58 on the wedge or member 55 and the springs 53 are then rendered effective to withdraw the engaging

pawls

46, 47 and 18 from engagement with the teeth 40, the inwardmovement of the pawls being limited by the pins 51, carried thereby, contacting with the bottom walls 52 of the slots 50, as hereinbefore described. From the foregoing description it will be understood that the

pawls

46, 47 and 48 are positively connected to rotate wit-h the member 42 which in turn is fixed to the platen shaft and to the platen and constitutes a clutch member which cooperates with the teeth 40. The member 39 carrying the teeth 40 on the other hand is connected to the shell or housing 34 which is free to turn around the platen shaft, or more properly speaking, affords a turning movement of the platen independently thereof when the

pawls

46, 47 and 48 are disengaged from the teeth 40." The shell 34 as hereinbefore described is rigidly connected to the driving sprocket or band wheel 35 which cooperateswith an endless band or sprocket chain 69 which likewise surrounds and cooperates with the driven sprocket or band wheel 32. A traveling stop 70 isconnected to the sprocket chain 69 and surrounds and slides upon a bar 71 secured at its rear end by a screw 72 to an upwardly projecting ear 73 formed on the bracket plate 27. The forward end of the bar 71 is secured by a screw 74 to a bracket arm 75 formed on the bracket plate 27. An adjustable stop 76 is seated on and adapted to be adjusted along the bar 71 and is secured in its adjusted position by a set screw 77 received in a tapped opening in the stop 76 and hearing at its inner end against the stop carrying bar 71. The outer side or face of the bar 71 is preferably provided with indices as indicated at 78 to indicate line space positions in the rotative movement of the platen, these indices facilitating an adjustment of the adjustable stop 76. A fixed stop 79 likewise projects laterally from the stop bar 71 at the forward end thereof. i

From what has been said it will be under- Siood that the traveling stop 70 moves in a rectilinear path as does that portion of the driving chain or band 69 between the band wheels 32 and 35 and that in the movement of the traveling stop rearwardly it engages and is arrested by the stop 76, whereas in the forward movement of the traveling stop 70 it is arrested by the fixed stop 79. If

therefore the billing clutch be engaged as indicated in Fig. 1, then the traveling stop will be positively connected to the platen and a rotative movement of the platen will effect a concurrent rectilinear movement of the traveling stop 70- between the stops 76 and 79 and the platen will be arrested in its backward and forward movements. The construction of the sprocket wheels, sprocket chain, traveling stop and the stops with which it cooperates is somewhat similar to the construction disclosed in the Felbel patent hereinbefore referred to and further detailed description thereof is deemed unnecessary. 'It is likewise believed that it is unnecessary to describe in detail the manner of using the billing devices for condensed recordand other work, since the operationoperation of writing a bill in condensed rec- 1 0rd work the clutch mechanism is released and the platen is rotated independently of the stop devices.

In order to notify the operator when the traveling stop 7 O is approaching the adjustable stop 76, so that undue pressure may not be exerted against the stop 76, I have provided a friction or brake spring 80 which is secured to the stop 76 and is adjustable therewith. As the stop 7 0 moves rearwardly on the stop bar 71 and is approaching the stop 76, the spring 80 will contact with and eflect a pressure against the stop to resist the traveling movement of the stop 70. This pressure exerted by the spring is felt by the operator in turning the. platen and movable stop and the operator will thus be notified of the approach of the stop 70 to the stop 76 and will not exert undue pres-' sure in bringing the stops 70 and 76 into engagement.

I have provided means for locking and maintaining indefinitely the clutch members out of engagement, it being understood that the spring 58 normally maintains the clutch members in engagement. This locking means for the clutch comprises an angular bracket arm 81 (see Figs. 1, 2 and 6), which is formed on the bracket plate 27 and extends to the right from the forward end thereof. The bracket arm 81 is slotted at 82 to receive the lever 64 therethrough and support and guide the forward end of the lever in. its swinging movement around its pivot screw 65. A locking latch 83 is pivoted on the bracket arm 81 by a shouldered screw 84, the barrel of the screw passing freely through an opening in the arm 81 and taking at its threaded end into a tapped opening in the locking latch, the shoulder of the screw bearing against the latch. This latch is provided with a finger piece 85 arranged above the bracket arm 81 and is bifurcated at 86 to correspond to the slot 82 in the bracket arm. A shoulder 87 is formed on the locking latch for engagement with the inner side of the lever 64 as indicated in Fig. 6 in order to lock the lever 64 in the position shown in this figure and prevent a movement of the lever from right to left. A leaf spring 88 is secured at one end 89 to the locking latch and bears at its free end against a pin 90 which projects rearwardly from the bracket arm 81'. The pressure of this spring tends to elevate the looking latch to the position shown in' Fig. 6 so that when the lever 64 is moved to the right beyond the shoulder 87 the latch 83 will be moved upwardly by its spring to the locking position shown, thus preventing a return of the lever 64 to thelocking position until adownward pressure is exerted on the finger key 85 of the locking latch. This is effective to depress the locking latch and free the shoulder 87 thereof from the lever 64. The'pressure of the spring 58 then becomes effective to move the lever 64 to the left, together with the wedge 55, thus projecting the locking dogs radially into engagement with the teeth 40 to positively connect the clutch members together and to effect a positive connection between the trav eling stop 70 and the platen.

The platen clutch shown at the left-hand end of the platen in Fig. 2 and by which the line spacing wheel 13 and platen 11 are connected consists of three pawls 91 mounted to slide radially in grooves formed in the left-hand platen head 92 on which the line spacing wheel is loosely mounted to enable the platen to turn independently thereof when freed from the engaging pawls. The pawls 91 have engaging teeth with inclinedfaces adapted to engage corresponding teeth 93 which project inwardly from the line spacing wheel. The arrangement of the pawls and teeth is such that they may be brought into engagementat any position of relative rotativefadjustinent be tween the platen and line spacing wheelin the same manner as the billing clutch hereinbefore described. Each of the pawls 91 has two cam faces, one'a releasing cam 94 and the other a locking cam 95. Individually movablespring-pressed wedges or cams 96 co-act with the cams .95 on the locking pawls to force and maintain the pawls in locking engagement with the teeth 93 of the line spacing wheel. cam 97 co-acts at its center-flat portion with the wedges 96 to force them out of engage ment with the pawls 91 and then the cam portion of the member 97 co-acts with the" cams 94 to force the pawls 91 out of engagement with the teeth 93 on the line spacing wheel. The longitudinal movement of the member 97 is controlled by a finger piece 98' which turns on the axis of the platen and through its cam 99 may force the spring member 100 to the right which in turn moves the member 97 to the right. I have referred to this clutch mechanism more particularly to make the advantages of my invention clear. Thus if the fractional platen spacing clutch should be actuated one of the clutch members of the biller (the pawls 46, 47 and 48) would receive a cor responding rotative adjustment for a frac-' tion of a line space while the other clutch member (the teeth 40) remains at rest, it being understood that at this time the pawls 46, 47- and 48 are disengaged from the teeth ment between the two, even though the A circular release:

platen after fractional spacing has been left in a fractional space position. If, however, a clutch such as that shown for instance in the Felbel patent hereinbefore referred to were employed in connection with a fractional spacer such for example as herein shown, the clutch members of the biller would under certain fractional line spacing conditions be out of register and either they could not be engaged or there necessarily would have to be a relative displacement between the traveling stop 70 and the platen, to enable the clutch members to properly engage. It will be seen therefore that these disadvantages are overcome without sacrificing the advantages derived from the use of a positively engaging clutch, which in practice has been found superior to a friction clutch, on account of the liability of the latter to slip when the platen is violently turned by the knobs or finger wheels on the platen.

It will be seen that by my present invention I effectively and positively lock the traveling stop 70 of the billing devices to the platen irrespective of the position of the platen when the clutch members are thrown into engagement and whether or not the platen at the time the clutch members are engaged is accurately positioned in the line space position. Moreover it will be understood that in the engagement of the clutch -members there is no relative displacementbetween the stop mechanism and the platen,

the traveling stop being positively connected to the platen in any position of arrest of the latter.

From the foregoing description it will be understood that the billing devices including the clutch mechanism by which it is operatively connected with and disconnected from the platen are carried by the plate 27 and are situated entirely outside of the right-hand end bar of the carriage and the devices are in the nature of an attachment which may be readily applied to existing forms of typewriting machines substantially without modifying any of the structural features of said machines.

Various changes may be made without departing from the spirit and scope of. my invention. i

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a cylindrical platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel; and stop mechanism for arresting the platen after a predetermined. extent of rotation and for affording a continued rotation of the platen to any desired extent after it has been arrested, said mechanism.

comprising means for positively clutching and connecting certain portions of the stop mechanism with the platen at any position of relative adjustment between the two.

2. In a typewriting machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacin wheel; stops for arresting said platen; chain for moving certain of said stops; and means for enabling the platen to rotate independently of said stops, said means comprising two cooperative positively engaging clutch members one operatively connected to the platen and the other operatively connected to the stop mechanism, said clutch members including means whereby they are cooperative to engage with one another at any position of relative adjustment between the two, and hand actuated means for controlling the engagement and disengagement of said clutch members.

3. In a typewriting machine, the combination of a rotative platen, a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel: a platen frame; a chain; stops for arresting said platen, certain of said stops being held against movement on the platen frame and certain of them being moved by the chain: means for effecting a relative adjustment between certain of said stops; and means which enable the platen to be turned to any desired extent without being arrested by said stops, said last mentioned means comprising two positively engaging clutch members one of which is operatively connected to the platen and the other of which is operatively connected to said chain, the clutch members including means whereby they may be positively connected at any position of relative adjustment between the two, and hand actuated means operable at will for effecting an engagement and disengagement between the clutch members.

4. In a typewriting machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel; a platen shaft; a platen frame; a pair of wheels one of which is a driving wheel loosely mounted on the platen shaft; an endless chain which passes around said. wheels; a rod or bar fixed to the platen frame and extending parallel with said chain where it passes from wheel to wheel;

two relatively adjustable stops carried by the driving wheel to and disconnecting it from the platen shaft, said clutch comprising two positively engaging clutch members one operatively connected to the driving wheel and the other to the platen, and means whereby said clutch members maybe positively engaged at any position ofrelative adjustment between the two.

5. In a typewriting machine, the combination of a rotative platen: a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to dis connect said parts to enable the platen to rotate independently of the line spacing wheel; an endless band which is adapted to move concurrently with the rotative movement of the platen; stop devices for arresting said endless band and platen; and a clutch for operatively connecting the band with the platen, said clutch comprising two positively engaging members and means whereby said clutch members are cooperative at any position of relative adjustment between the two, one of said clutch members being operatively connected to the platen and the other being operativelyconnected. to the endless band, and hand actuated means operable at will for effecting a connection ind disconnection between said clutch memers.

6. In a typewriting machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel; stop mechanism for arresting the platen after a predetermined extent of rotation; and means for affording a continued rotation of the platen to' any desired extent after it has been arrested, said last mentioned means comprising a clutch member operatively connected to the platen, a second clutch member operatively connected to the stop mechanism, one of the clutch members carrying teeth and the other of said clutch members carrying independently movable dogs 00- operating with said teeth, and wedging means cooperative with said independently movable dogs for effecting an interlocking positive engagement between the clutch members at any position of relative adjustment between the two. 1

7 In a typewriting machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel; a stop mechanism for arresting the platen after a predetermined extent of rotation; and means for affording a continued rotation of the platen to any desired extent after it has been arrested, said last mentioned means comprising a clutch member operatively connected to the platen, and a second clutch member operatively connected to the stop mechanism, one of said clutch members carrying teeth and the other of said clutch members carrying independently movable dogs cooperating with said teeth,

each of said dogs being adapted to engage either side of any of said teeth and the arrangement being such that in any relative position of the two clutch members one of said dogs will prevent relative motion of the two clutch members in one direction and, at least one of said dogs will prevent relative motion of said clutch members in the opposite direction.

8. In a typewriting machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel; stop mechanism for arresting the each of said dogs being adapted to engage v either side of any of said teeth and the arrangement being such that in any relative position of the two clutch members one of said dogs will prevent relative motion of the two clutch members in one direction and at least one of said dogs will prevent relative motion of said clutch members in the'opposite direction, and wedging means cooperative with said independently movable dogs for holding said dogs in engagement with said teeth.

9. In a typewriting machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel; stop mechanism for arresting the platen after a predetermined extent of rotation; and means for affording continued rotation of the platen to any desired extent after it has been arrested, said last mentioned means comprising a clutch member operatively connected to the platen, a second clutch member operatively connected to the stop mechanism, one of the clutch members having a series of teeth and the other of said clutch members carrying three dogs each adapted to engage either side of any one of said teeth, the arrangement being such that in any relative position of the two clutch members at least one of said dogs will positively prevent relative motion between said clutch members in one direction and at least one of said dogs will positively prevent relative motion between said clutch members in the opposite direction.

10. In a typewriting machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen toturn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel; stop mechanism for arresting the platen after a predetermined extent ofrotation; and means for affording a continued rotation of the platen to any desired extent after it has been arrested, said last mentioned means comprising a clutch member operatively connected to the platen, a'second clutch member operatively connected to said stop mechanism, one of said clutch members having a circular series of teeth and the other of said clutch members having a plurality of independently movable dogs, and means for camming each of said dogs into engagement with said teeth, the arrangement being such that in any relative position of said clutch members at least one of the dogs will positively prevent relative rotation between said clutch members in one direction and at least one of said dogs will prevent relative rotation between said clutch members in the opposite direction.

11. In a typewriting machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel; stop mechanism for arresting the platen after a predetermined extent of rotation; and means for affording a continued rotation of the platen to any desired extent after it has been arrested, said last mentioned means comprising a clutch member operatively connected to the platen, a second clutch member operatively connected to the stop mechanism, one of saidclutch mem bers having a series of teeth each of said teeth having inclined sides, a plurality of independently movable dogs carried by the other of said members and each of said dogs having two engaging faces inclined to cor respond with the inclined faces of said teeth and each of said dogs being movable into and out of engagement with said teeth, the arrangement being such that in any relative position of the two clutch members at least one of said dogs will have one of its faces engaging one of the faces of one of said teeth to prevent relative motion between said clutch members in one direction and at least one of said dogs will have one of its faces engaging one of the faces of one of said teeth to prevent relative motion 'between said clutch members in the opposite direction, and means for moving iiito and out of engaging position.

12. In a typewriting machine, the combi nation of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to dis connect 'said parts to enable the platen to rotate independently of the line spacing wheel; stop mechanism for arresting the platen after a predetermined extent of rotation; and means for affording a continued rotation of the platen to any desired extent after it has been arrested, said last men tioned means comprising a clutch member operatively connected to the platen, a sec ond clutch member operatively connected to said stop mechanism, one of said clutch members having a series of internal teeth, each of the teeth having inclined faces, a

plurality of independently movable'dogs on the other of said clutch members, each of said dogs having two engaging faces inclined to correspond with the inclined faces of said teeth and each'of said dogs being radially movable into and out of engagement with said teeth, the arrangement being such that in any relative position of said elements at least one of said dogs will have one of its faces engaging one of the faces of one of said teeth to prevent relative motion between said clutch members in one direction and at least one of said dogs will have one of its faces engaging one of the faces of said teeth to prevent relative rotation of said clutch members in the opposite direction, and a spring-pressed wedge for camming said dogs into engagement with said teeth.

13. In a typewriting machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel; stop mechanism for arresting the platen after a predetermined extent of rotation; and means for affording a continued rotation of the platen to any desired extent after it has been arrested; said last mentioned means comprising a clutch member operatively connected to the platen, a second clutch member operatively connected to said stop mechanism, one of said clutch members carrying a series of teeth having inclined faces, three dogs carried by the other of said clutch members, said dogs having inclined faces, means forvmoving said dogs into engagement with said teeth, the engagement being such that in any relative position of said clutch members at leastone of said dogs will engage on one side or face of one of said teeth and at least one of said dogs will engage on the other side or face of one of said teeth and in some relative said dogs adjustments of the clutch members any one of said dogs will be engaged on one of its faces and in other adjustments the same dog will beengaged on the other face, and means for releasing said dogs, whereby said platen is positively and releasably connected with said stop mechanism by wedge action.

14. In a type writing machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn togetheror to disconnect said parts to enable the platen to locking dogs mounted on the other of said,

clutch members for rectilinear radial motion into and out of engagement with said teeth, and hand-operated means movable longitudinally of the platen for controlling the engagement and disengagement of said dogs.

15. In a typewriting machine, the combination of a rotative platen; a line spacing wheel; a clutch to connect the line spacing wheel and platen to turn together or to disconnect said parts to enable the platen to rotate independently of the line spacing wheel; stop mechanism for arresting the platen after a predetermined extent of rotation; means for affording a continued rotation of the platen to any desired extent after it has been arrested, said last mentioned means comprising a clutch member operatively connected to the platen, a second clutch member operatively connected to the stop mechanism, one of said clutch members having internal teeth, locking dogs mounted in slots on the other of said clutch members and adapted to lock said clutch members together, and a Wedge movable longitudinally of the platen and adapted tomove said dogs into locking engagement with said teeth.

16. In a typewriting machine, the combination of a rotative platen; stop mechanism for arresting the platen after a predetermined extent of rotation; and means for affording a continued rotation of the platen in any desired extent after it has been arrested, said last mentioned means comprising a clutch operatively connected with the platen, a second clutch member'operatively connected to the stop mechanism, teeth provided on one of said clutch members and independently movable dogs carried by the other of said clutch members and adapted to engage said teeth, aspring-pressed cam cooperative with all of said dogs to maintain them in engagement with said teeth, and hand actuated means for moving said cam against the pressure of its spring to release said dogs. 7 1

17. In a typewriting machine, the combi nation of a rotative platen; stop mechanism for arresting the platen; and means for rendering said stop mechanism operative and inoperative, said last mentioned means comprising two clutch members, one of which is provided with teeth and the other of which carries independently movable dogs for engaging said teeth, and a floating cam for controlling said dogs.

18. In a typewriting machine, the combination of a rotative platen; stop mechanism for arresting said platen; and means for rendering said stop mechanism operative and inoperative to arrest the platen, said last mentioned means comprising two clutch members one of which is provided with teeth and the other of which is provided with independently and radially movable dogs adapted to engage said teeth, and a cone disposed intermediate of said dogs to control the engagement and disengagement thereof. p

19. Ina typewriting machine, the combination of a rotative platen; stop mechanism 7 for arresting said platen; and means for rendering said stop mechanism operative and inoperative to arrest the platen; said last mentioned means comprising two clutch members one of which is provided with teeth 1 and the other of which is provided with independently and radially movable dogs adapted to engage said teeth, a cone disposed intermediate of said dogs to control the engagement and disengagement thereof, and means whereby said cone is adapted to receive a movement longitudinally and transversely of the axis of the platen.

20. In a typewriting machine, the combination offa rotative platen, stops, a clutch for rendering the stops eifective to arrest the rotation of the platen, a spring for forcing the members of the clutch into engagement, a finger piece for releasing said clutch, and a positively engaging lock for locking the finger piece in the clutch-releasing position.

21. In a typewriting machine, the combination of a rotative platen, stops, a clutch for rendering the stops efiective to arrest the rotation of the platen, a spring for forcing the members of the clutch into engagement, a finger piece for releasing said clutch, and a positively engaging springpressed latch which is moved by its spring to the locking position and positively locks the finger piece in the clutch-releasing position when the finger piece is moved to such position. I

' 22. Ina typewriting machine, the combination of a rotative platen, stops, a clutch for rendering the stops effective to arrest the rotation of the platen, a spring for forcing the members of the clutch into ennation of a rotative platen, stops, a clutch for rendering the stops effective to arrest the rotation of the platen, a spring for forcing the members of the clutch into engagement, a hand-actuated lever for releasing said clutch, a spring-pressed pivoted latch that positively engages said lever and locks it in the clutch-releasing position, and a key for moving said latch from its locking position to afford a re'engagement of the clutch.

24:. In a typewriting machine, the combination of a cylindrical platen; a line spacing Wheel adapted to turn with and to afford a movement of the platen independ- Q ently thereof; a clutch for connecting the I line spacing wheel and platen; and stop mechanism for arresting the platen after a predetermined extent of rotation and for affording a continued rotation of the platen toany desired extent after it has been arrested, said mechanism comprising means for positively clutching and connecting certain portions of the stop mechanism with the platen at any position of relative adjust-ment between the two.

25. In a typewriting machine, the combination of a rotative platen; a platen shaft; billing stops for arresting the platen; a cone which surrounds the platen shaft;

clutch members which connect certain of said billing stops with the platen, one of said clutch members comprising individually movable pawls with which said cone cooperates; a spring for forcing said cone into locking engagement with said pawls; and a release lever operative to release the pressure of said spring on the cone.

26. In a typewriting machine, the combination of a rotative platen; a platen shaft; billing stops for arresting the platen; a cone which surrounds the platen shaft; clutch members which connect certain of said billing stops with the platen, one of said clutch members comprising individually movable pawls with which said cone cooperates; a spring for forcing said cone into locking engagement with said pawls; a release lever operative to release the pressure of said spring on the cone; and means for locking said release lever in the releasing position.

27. In a typewriting machine, the combination of a rotative platen; billing stops for nation of a rotative platen; billing stops for arresting the rotation of the platen; and clutch mechanism for operatively connecting certain of said stops with the platen, said clutch mechanism comprising three radially movable pawls, and three contractile springs connected at their ends to said pawls. V

2 9. In a typewriting machine, the combination of a rotative platen; billing stops for arresting the rotation of the platen; and

clutch mechanism for operatively connecting certain of said stops with the platen, said clutch mechanism comprising a springpressed sleeve mounted for movement along the platen shaft, a flange formed on said sleeve, a controlling device moved to operative position by said sleeve, individually movable locking dogs or pawls controlled by said controlling device, and a release lever cooperativewith said flange.

80. In a typewriting machine, the combination of a rotative platen; billing stops for arresting the rotation of the platen; and clutch mechanism for operatively connectlng certain of said stops with the platen, sald clutchmechanism comprising a springpressed sleeve mounted for movement along theplaten shaft, a wedge moved to locking posltion by said sleeve, individually movable locking dogs or pawls moved to and locked against withdrawal, from engagement by said wedge, and a release lever operative to move said sleeve against the pressure of its spring and thus release the Wedge and the locking pawls.

In a typewriting machine, the combination of a rotative platen; billing stops for arresting the rotation of the platen; and

clutch mechanism for operatively connect- -ing certain of said stops with the platen,

said clutch mechanism comprising a series of radially, independently and variably movable locking dogs or pawls spring pressed to their inoperative positions, a single sprlng-pressed controlling device 00- operative with said locking dogs and which overcomes the pressure of the springs which move the dogs into inoperative position and lock the pawls in engagement, and a hand actuated device for moving said controlling device against the pressure of its spring.

In a typewriting machine, the combination of a carriage; a rotative platen carried thereby; billing devices situated wholly outside or beyond the ends of the carriage, said billing devices comprising stops for arresting the rotation of the platen, an endand on which said band wheels, stops,

less flexible carrier connected to certain of said stops, band wheels around which said endless carrier passes, and a clutch to operatively connect the platen and said carrier; and a single bracket plate secured to the carriage outside of or beyond the ends thereogi an clutch are supported.

33. In a typewriting machine, the combination of a carriage; a rotative platen carried thereby; billing devices situated wholly outside or beyond the ends of the carriage, said billing devices comprising stops for arresting the rotation of the platen, an end less flexible carrier connected to certain of said stops, band wheels around which said endless carrier passes, a clutch to operatively connect the platen and said carrier, a release lever for cont-rolling said clutch, alatch for locking said release lever in the releasing position, and a single bracket plate secured to the carriage outside or beyond the ends thereof and on which said band wheels stops, clutch, release lever, and latch are supported.

34. In a typewriting machine, the combination of a rotative platen; billing devices for arresting said platen, said billing devices comprising stops for arresting the rotation of the platen, a flexible endless carrier, certain of said stops being connected to said carrier, wheels around which said carrier passes, a shouldered screw on which one of said wheels is mounted to turn, a slotted support in which said screw is received, an eccentric nut having a threaded connection with said screw, and a fixed pin against which the nut bears.

35. In a typewriting machine, the combination of a rotative platen; billing devices for arresting said platen, said billing devices comprising stops for arresting the r0- tation of the platen, a clutch for operatively connecting certain of said stops with the platen, a controlling lever for said clutch, and a spring-pressed pivoted locking latch for said controlling lever, said locking latch having a shoulder that is adapted to be interposed in the path of said lever to positively lock it against movement.

Signed at Syracuse, in the county of Onondaga, and State of New York this 29th day of Sept. A. D. 1909.

HERBERT H. STEELE.

Witnesses Bnssm G. KITTELL, GEORGE L. GoLINc.

Copies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.